Means for regulating the supply of electrical currents.



No. 896,227. PATENTED AUG. 18, 1908. I o. M. P. MONTBARBON. MEANS FOR REGULATING THE SUPPLY OF ELEGTRIG CURRENTS.

APPLICATION FILED APR. 18; 1907.

UNITE STATES PATENT OFFICE.

CHARLES MAURICE PHILIPPE MONTBARBON, oEPAEIs, FRANCE.

MEANS FOR REGULATING THE SUPPLY OF ELECTRIC CURRENTS.

To all whom it may concern:

Be it known that I, CHARLES MAURICE PHILIPPE MONTBARBON, of 135 Rue de Tolbiac, Paris, France, engineer, have invented a new and useful Improvement in Means for Regulating the Supply of Electric Currents, which improvement is fully set forth in the following specification.

My invention relates to improvements in means for regulating the supply of current from generators, such as magnetos, dynamos, or the like.

The object of the invention is to provide a simple means by which the use of platinum. screws, cams, tremblers, rollers, collectors, and the like may be avoided, while at the same time the apparatus can be easily removed for repairs or cleaning.

An essential feature of applicants device is that the current is never interrupted, thus avoiding the injurious effects of self-induction.

My invention is particularly advantageous for the distribution of current from a generator to the primary of an induction coil, since by means of it, two induction currents are produced in the secondary at each passage of the brush onto and off a contact, as will be clear from the description hereinafter. These results are obtained by connecting the insulated end of the armature winding to a brush which rotates with it" and which normally rests against grounded contact plates arranged-in the form of a ring by which the armature is short circuited when current is not to be delivered, while the passage of the brush over two insulated terminals places it in series with the circuit to which current is to be de livered, for example, the primary of a transformer. The shape of these terminals is such that in its movement the brush never breaks the circuit of the armature, thus avoiding any possibility of damage from self-induction. This arrangement is applicable to all apparatus for periodically allowing the passage of an electric current.

-' The annexed drawing illustrates one form in which this invention may be embodied.

Figure 1 shows diagrammatically the arrangement as seen at the end of the armature spindle; Fig. 2 is a section; Fig. 3 shows a portion of the insulated contacts; and Fig. 4. shows a modification.

One end a of the armature winding is connected to the spindle b and through it to ground in any usual manner. The other end Specification of Letters Patent.

Application filed April 18, 1907.

Patented Aug. 18, 1908.

Serial No. 368,849.

0, carefully insulated, passes out from the spindle through a central hole and is connected to a metal piece (1, embedded in the insulating disk c, which is keyed upon the spindle. In a cavity in the piece at is mounted a brush f of carbon or metal, pushed out wards by a spring 9. The brush rubs upon the inside of a stationary ring, comprising two contact plates 11 grounded in any suitable way, as for example, by the conductors m connected to earth at n, said contact plates being separated by insulated terminals lc Z connected to one end of the circuit to which current is to be delivered, for example, the primary of an induction coil, the other end of the circuit being connected to ground.

Figs 3 and 4 which show partial developments of the internal face of the ring, illustrate the shape the terminals may be given in order to prevent the interruption of the armature current by the passage of the brushes from the contact plate to the terminal and vice versa, which would cause a spark and would be very prejudicial by reason of the self-induction of the armature, which is generally high. This arrangement has further the great advantage of equalizing the wear of the insulation and the conducting parts as the continuity ofthe surface on which the brush rests is never broken.

Having thus fully described my invention, what I claim is 1. The combination, with a generator having an armature, one terminal of which is grounded, of a ring comprising grounded contact-plates and terminal plates alternating with and insulated from each other, and a contact device connected to the other ter minal of the armature and a'rranged to make a traveling contact with the plates comprising the ring.

2. The combination, with a generator having an armature, one terminal of which is grounded, of a ring comprising grounded contact-plates and terminal plates alternating with and insulated from each other, said con tact and terminal plates having their adja cent ends lapping past each other, and a contact device connected to the other terminal of the armature and arranged to make a traveling contact with the plates comprising the ring.

3. The combination, with a generator having an armature, one terminal of which is grounded, of a ring comprising grounded contact-plates and terminal-plates alternating with and insulated from each other, said contact-plates having their adjacent ends lapping past each other, a contact device connected to the other terminal of the armature and arran ed to make a traveling contact with the plates comprising the ring, and an induction coil having its primary connected to the terminal plates of the ring.

4. The combination, with a generator having a rotating armature, one terminal of which is grounded, of a ring comprising grounded contact plates and terminal plates alternating with and insulated from each other, a contact device connected to the other terminal of the armature and rotating with said armature, said contact device traveling in contact with. the plates comprising the ring, and a work circuit connected. to the terminal plates said contact device traveling in contact with the plates comprising the ring, and a work circuit connected to the terminal plates.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

CHARLES MAURICE PHILIPPE MONT EARBON.

Witnesses:

JEAN VAUGI-IER, H. C. (10x12. 

